AvalonBay Communities IncReddit replaces AvalonBay in the S&P 500, likely causing index funds to sell AvalonBay shares.
Reddit is set to join the S&P 500 before the market opens on Aug. 18, replacing AvalonBay Communities. J.P. Morgan analysts estimate index funds tracking the benchmark will need to buy about 16.7 million Reddit shares, worth nearly $2.9 billion at Friday's price of roughly $175.69. That projected demand is about three times Reddit's average daily trading volume of 5.98 million shares since its March 2024 IPO. Shares surged more than 11% on the announcement, though the stock is still down over 31% this year and 42% from its September 2025 peak. Stephens analyst Melissa Roberts noted that newly added S&P 500 companies historically outperform between announcement and inclusion, but then lag the benchmark by roughly 2% over the next three months.
AvalonBay Communities IncReddit replaces AvalonBay in the S&P 500, likely causing index funds to sell AvalonBay shares.
Equity Residential
Reddit, Inc.Reddit's inclusion in the S&P 500 triggers index fund buying of about $2.9 billion, boosting its stock.
JPMorgan Chase & Co